Red Son used the Inferno Jet to escape from the Spider Queen, who was using her Spider-Bots to take control of the civilians. He later used the Inferno Jet to escape from Syntax's missiles and ends up running to MK's team. After Sandy destroyed the jet by punching it, Red Son attempted to take the Team Dronecopter from MK and the others due to the Inferno Jet's destruction.
LEGO® Building Instructions' description
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